This is driving me completely insane . When i start the car it runs fine idles ok no problem . After the car has been running for maybe two minuites when driving its ok until about 3k rpm and it starts to cut out and the car jerks until i let off . If i hold the clutch in turn the key , shut it off (WHILE COASTING) , turn they key and start the car again it will run fine no cut or jerk even to redline , Then after two minites go by it cuts and jerks again about 3th rpms or half throttle . so again i hold the clutch on , turn off, glide , turn back on and all is good until two min later , so every 3 min repeat turn off process . its horrible !!!! So far two different shops cant fix it . Running stock boost , buschur 3inch dp hi flow cat and exhaust . ok I have capped all the vacume lines thinking it may be a boost leak/ changed the maf/ new alternator / new plugs / changed the ecu/ tried wallbro 255lph fuel pump / tested again for boost leak via system pressure test / new battery / new water pump new o2 sensor / new bov/ new fuel filter/ . And replaced thermostat , radiator , water pump timing belt and head gasket . Any ideas suggestions , knowledge is greatly appriciated Thanks its driving me insane !!!!